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Contents
#= require modularity/data/cache
# A generic ajax loader for parallel GET requests.
# Prevents duplicate requests, caches the responses
# to answer subsequent requests immediately
# without additional server requests.
#
# Warning: Caches the responses, so once a request is cached,
# any new content on the same URL will not be visible!
class window.modularity.AjaxLoader
constructor: (params = {}) ->
@cache = new modularity.Cache()
# Whether to perform caching of data.
# Default: no.
@caching = params.caching
get: (url, callback) ->
cached_value = @cache.get url
# New request --> start GET call, store callback.
unless cached_value?
@cache.add url, [callback]
return jQuery.get url, (data) =>
cb(data) for cb in @cache.get(url)
if @caching
@cache.add url, data
else
@cache.remove url
# Request while the GET call is still pending -->
# add the given callback to the list of waiting callbacks.
if cached_value.constructor is Array
return cached_value.push callback
# There is a cached response for this request --> answer the request immediately.
callback(cached_value)
Version data entries
3 entries across 3 versions & 1 rubygems